WO2021205671A1 - Dispositif de source de lumière - Google Patents

Dispositif de source de lumière Download PDF

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Publication number
WO2021205671A1
WO2021205671A1 PCT/JP2020/016807 JP2020016807W WO2021205671A1 WO 2021205671 A1 WO2021205671 A1 WO 2021205671A1 JP 2020016807 W JP2020016807 W JP 2020016807W WO 2021205671 A1 WO2021205671 A1 WO 2021205671A1
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Prior art keywords
light
light emitting
emitting diode
amount
distribution
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PCT/JP2020/016807
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English (en)
Japanese (ja)
Inventor
守 萩原
Original Assignee
株式会社Ｕｓｋテクノロジー
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Application filed by 株式会社Ｕｓｋテクノロジー filed Critical 株式会社Ｕｓｋテクノロジー
Priority to CN202080099566.8A priority Critical patent/CN115380188A/zh
Priority to PCT/JP2020/016807 priority patent/WO2021205671A1/fr
Priority to US17/917,093 priority patent/US20230151949A1/en
Priority to JP2022514301A priority patent/JPWO2021205671A1/ja
Publication of WO2021205671A1 publication Critical patent/WO2021205671A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F21Y2105/18—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a light source device.
  • a light source device in which a plurality of light emitting diodes are arranged on a plane is known (see, for example, Patent Document 1).
  • a light source device using a light emitting diode that emits ultraviolet rays is used in a fluid sterilizer that sterilizes a fluid such as water (inactivates bacteria) and a resin curing device that cures an ultraviolet curable resin.
  • an object of the present invention is to provide a light source device capable of improving the uniformity of the amount of light on the irradiation surface.
  • the present invention is a light source device in which a plurality of light emitting diodes are arranged on a plane for the purpose of solving the above problems, and the light distribution angle of each light emitting diode is less than 50 ° or larger than 80 °.
  • a light source device is provided.
  • the uniformity of the amount of light on the irradiated surface can be improved.
  • FIG. 1 It is a schematic block diagram of the light source apparatus which concerns on one Embodiment of this invention. It is a graph which shows the relationship between the relative luminous intensity and the angle of the light emitting diode of light distribution angle 20 °. It is a graph which shows the relationship between the relative luminous intensity and the angle of the light emitting diode of light distribution angle 20 °. It is a graph which shows the relationship between the relative luminous intensity and the angle of the light emitting diode of light distribution angle 140 °. It is a graph which shows the relationship between the relative luminous intensity and the angle of the light emitting diode of light distribution angle 140 °. It is a figure which shows the arrangement of a light emitting diode. FIG.
  • FIG. 3A is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 20 ° in FIG. 3A.
  • FIG. 3A is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 50 ° in FIG. 3A. It is a figure which shows the simulation result of the light amount distribution when the light distribution angle is 140 ° in FIG. 3A. It is a graph which shows the relationship between the distance from the center where the amount of light becomes 60% or 80% of the peak value, and the light distribution angle. It is a figure which shows the simulation result of the light amount distribution when the optical distance from a light emitting diode to an irradiation surface is 50 mm when the light distribution angle is 20 °.
  • FIG. 5A is a graph showing a light amount distribution in a cross section passing through a central axis.
  • FIG. 5B is a graph showing a light amount distribution in a cross section passing through a central axis.
  • FIG. 5C is a graph showing a light amount distribution in a cross section passing through a central axis.
  • FIG. 5D it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 5E it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 5 is a graph showing the relationship between the distance from the center where the amount of light is 60% or 80% of the peak value and the optical distance from the light emitting diode to the irradiation surface when the light distribution angle is 20 °. It is a figure which shows the simulation result of the light amount distribution when the optical distance from a light emitting diode to an irradiation surface is 50 mm when the light distribution angle is 140 °. It is a figure which shows the simulation result of the light amount distribution when the optical distance from a light emitting diode to an irradiation surface is 80mm when the light distribution angle is 140 °.
  • FIG. 8A is a graph showing a light amount distribution in a cross section passing through the central axis.
  • FIG. 8B is a graph showing a light amount distribution in a cross section passing through the central axis.
  • FIG. 8C is a graph showing a light amount distribution in a cross section passing through the central axis.
  • FIG. 8D is a graph showing a light amount distribution in a cross section passing through the central axis.
  • FIG. 8E is a graph showing a light amount distribution in a cross section passing through the central axis.
  • FIG. 5 is a graph showing the relationship between the distance from the center where the amount of light is 60% or 80% of the peak value and the optical distance from the light emitting diode to the irradiation surface when the light distribution angle is 140 °. It is a figure explaining the arrangement of each light emitting diode when the LED pitch is 8.5 mm.
  • FIG. 11A is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 20 °.
  • FIG. 11B is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 20 °.
  • FIG. 11C is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 20 °.
  • FIG. 11D is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 20 °.
  • FIG. 11E is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 20 °.
  • FIG. 12A it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 12B it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 12C it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 12D it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 12A it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 12B it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 12C it is a graph which shows the light amount distribution in the cross
  • FIG. 12E it is a graph which shows the light amount distribution in the cross section passing through the central axis.
  • FIG. 5 is a graph showing the relationship between the distance from the center where the amount of light is 60% or 80% of the peak value and the LED pitch when the light distribution angle is 20 °. It is a graph which shows the relationship between the LED pitch and the in-plane light amount distribution ratio when the light distribution angle is set to 20 °.
  • FIG. 11A is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 140 °.
  • FIG. 11B is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 140 °.
  • FIG. 11C is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 140 °.
  • FIG. 11D is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 140 °.
  • FIG. 11E is a diagram showing a simulation result of a light amount distribution when the light distribution angle is 140 °.
  • FIG. 15A is a graph showing a light amount distribution in a cross section passing through a central axis.
  • FIG. 15B is a graph showing a light amount distribution in a cross section passing through a central axis.
  • FIG. 15C is a graph showing a light amount distribution in a cross section passing through a central axis.
  • FIG. 15D is a graph showing a light amount distribution in a cross section passing through a central axis.
  • FIG. 15E is a graph showing a light amount distribution in a cross section passing through a central axis.
  • FIG. 5 is a graph showing the relationship between the distance from the center where the amount of light is 60% or 80% of the peak value and the LED pitch when the light distribution angle is 140 °. It is a graph which shows the relationship between the LED pitch and the in-plane light amount distribution ratio when the light distribution angle is 140 °.
  • It is a figure explaining the arrangement of each light emitting diode when the number of light emitting diodes used is 7. It is a figure explaining the arrangement of each light emitting diode when the number of light emitting diodes used is 19. It is a figure explaining the arrangement of each light emitting diode when the number of light emitting diodes used is 37.
  • FIG. 1 is a schematic configuration diagram of a light source device according to the present embodiment.
  • the light source device 1 is a device in which a plurality of light emitting diodes 2 are arranged on a plane.
  • the case where a resin-sealed type in which the light-emitting diode chip is resin-sealed is used as the light-emitting diode 2, but the specific configuration of the light-emitting diode 2 is not particularly limited.
  • the light emitting diode 2 may be a hollow package in which a light emitting diode chip is sealed by covering it with glass or the like, or a chip-on-board type that does not cover the chip. ..
  • the emission wavelength of the light emitting diode 2 is not particularly limited.
  • the plurality of light emitting diodes 2 are arranged at equal intervals in the circumferential direction and the radial direction with the central axis C perpendicular to the plane on which the plurality of light emitting diodes 2 are arranged as the center.
  • the arrangement pitch of the light emitting diodes in the radial direction is referred to as an LED pitch.
  • the irradiation surface 3 to which the light from the light source device 1 is irradiated is a surface parallel to the plane on which the plurality of light emitting diodes 2 are arranged.
  • the optical distance from each light emitting diode 2 to the irradiation surface 3 along the direction perpendicular to the plane is defined as D.
  • the object to which the light from the light source device 1 is irradiated is not particularly limited, and may be a gas, a liquid, or a solid.
  • the light distribution angle of each light emitting diode 2 is set to less than 50 ° or larger than 80 °. The reason will be described below.
  • the light distribution angle is also called a directivity angle, and is an angle range in which the light intensity (light intensity) of the light emitting diode 2 is at least half of the peak value or the maximum value.
  • the light distribution angle is measured by moving the light receiver while maintaining a constant distance from the light emitting diode 2 and measuring the light intensity at each angle. For example, as shown in FIGS.
  • the angle range of plus or minus 10 ° is more than half of the peak value. This is the area where light intensity can be obtained.
  • the angle range of plus or minus 70 ° is more than half of the maximum value when the front surface of the light emitting diode 2 is 0 °.
  • the means for adjusting the light distribution angle is not particularly limited.
  • it may have a reflection mechanism such as a concave mirror-shaped reflector, or may have a transmission type light collection mechanism such as a lens.
  • the light distribution angles of all the light emitting diodes 2 are the same, but some errors due to manufacturing tolerances and the like are allowed.
  • the LED pitch (arrangement pitch in the radial direction) is 10 mm, and the light emitting diode 2 is arranged in a range of 60 mm in diameter will be examined.
  • 36 light emitting diodes 2 are arranged at equal intervals in the circumferential direction on the circumference having a diameter of 60 mm, and a total of 127 light emitting diodes 2 are used.
  • the radius of the light source region that is, the radius of the region where the light emitting diode 2 is arranged is 60 mm.
  • the light distribution angle of each light emitting diode 2 was changed to simulate the light amount distribution on the irradiation surface 3.
  • the light amount distribution on the irradiated surface when the light distribution angles are 20 °, 50 °, and 140 ° is as shown in FIGS. 3B to 3D.
  • a graph showing the light amount distribution in three dimensions and a graph of the light amount distribution in the cross section passing through the central axis C are also shown.
  • the optical distance D between the light emitting diode 2 and the irradiation surface 3 was set to 100 mm. Further, even when the light distribution angles were different, the simulation was performed assuming that the brightness of one light emitting diode 2 (the total amount of light emitted) was constant. The calculation results at each light distribution angle are summarized in FIG. Here, an index for evaluating the uniformity of the light amount distribution on the irradiation surface 3 will be described. In applications that require uniformity of the light source such as water sterilization or resin curing, increasing the light output of ultraviolet light simply improves the water sterilization or resin curing performance (effect performance) as the light output increases. However, by increasing the area (depth) where the light is irradiated, the light output is improved more than increased.
  • the light source in order to obtain 67% of the uniformity of the effect performance (within 1.5 times the uniformity of the amount of light), the light source needs to have a uniformity of at least 80% or more, and the uniformity of the effect performance is 50% (within 1.5 times). To obtain the uniformity of the amount of light within 2.0 times), the light source needs to have a uniformity of at least 60% or more. Therefore, in the present embodiment, as an index for evaluating the uniformity of the light amount distribution on the irradiation surface 3, "distance from the center where the light amount is 80% of the peak value" and "60% of the light amount is the peak value". The distance from the center is used.
  • the “center” here means the center of the region where the light emitting diode 2 is arranged, that is, the position of the central axis C.
  • good results are obtained in the region where the light distribution angle is small and the region where the light distribution angle is large.
  • the intermediate region that is, the light distribution angles are 50 °, 60 °, and 80 °
  • the "distance from the center, which is%" is reduced, and the uniformity of the amount of light on the irradiation surface 3 is reduced.
  • the uniformity of the light amount on the irradiation surface 3 is passed.
  • the “distance from the center where the amount of light is 80% of the peak value” is 44 mm or more, and the amount of light on the irradiation surface 3 is uniform. The sex is improving.
  • the light distribution angle of each light emitting diode 2 is set to less than 50 ° or larger than 80 °. Further, from the graph of FIG. 4, when the "distance from the center where the amount of light is 80% of the peak value" is 44 mm or more, the “distance from the center where the amount of light is 60% of the peak value" is the light distribution angle. In the region of less than 50 °, it corresponds to 58 mm or more, and in the region of the light distribution angle of more than 80 °, it corresponds to 60 mm or more.
  • the "distance from the center where the light amount is 60% of the peak value” is 58 mm or more, and when the light distribution angle is larger than 80 °, the "light amount”.
  • the “distance from the center where is 60% of the peak value” is set to be 60 mm or more as a criterion for acceptance.
  • the light amount distribution on the irradiation surface 3 is simulated. I asked. The simulation results are shown in FIGS. 5A to 5E. Further, the light amount distribution in the cross section passing through the central axis C in each case is shown in FIGS. 6A to 6E. Further, from FIGS.
  • the "distance from the center where the amount of light is 60% of the peak value” and the “distance from the center where the amount of light is 80% of the peak value” are as the optical distance D increases. It is reduced, and when the optical distance D exceeds 200 mm, it is considered to be below the acceptance standard. Therefore, when the light distribution angle of each light emitting diode 2 is less than 50 °, it is desirable that the optical distance D from each light emitting diode 2 to the irradiation surface 3 is 200 mm or less. Next, when the light distribution angle of the light emitting diode 2 is made larger than 80 °, a suitable optical distance D will be examined.
  • the light amount distribution on the irradiation surface 3 is simulated. I asked. The simulation results are shown in FIGS. 8A to 8E. Further, the light amount distribution in the cross section passing through the central axis C in each case is shown in FIGS. 9A to 9E. Further, from FIGS.
  • the results of calculating the "distance from the center where the amount of light is 60% of the peak value” and the “distance from the center where the amount of light is 80% of the peak value” are shown in FIG. Shown together.
  • the "distance from the center where the amount of light is 60% of the peak value” and the “distance from the center where the amount of light is 80% of the peak value” are when the optical distance D is 50 mm. It is rejected, and it is passed when the optical distance D is 80 mm or more.
  • the LED pitch that is, the arrangement pitch in the radial direction of the light emitting diode 2 will be examined.
  • FIGS. 11A to 11E the cases where the LED pitch was set to 8.5 mm, 10 mm, 12 mm, 15 mm, and 20 mm were examined.
  • the region (light source region) in which the light emitting diode 2 is arranged is constant at a diameter of 60 mm, and the LED pitch is adjusted by increasing or decreasing the number of the light emitting diodes 2 to be arranged to adjust the density.
  • the number of light emitting diodes 2 used is 169 when the LED pitch is 8.5 mm, 127 when the LED pitch is 10 mm, 91 when the LED pitch is 12 mm, 61 when the LED pitch is 15 mm, and 37 when the LED pitch is 20 mm. be. Since these have different total numbers of light emitting diodes 2, the simulation was performed assuming that the total amount of light was the same.
  • the light amount distribution on the irradiation surface 3 was obtained by simulation when the light distribution angle of the light emitting diode 2 was 20 ° and the LED pitch was 8.5 mm, 10 mm, 12 mm, 15 mm, and 20 mm.
  • the simulation results are shown in FIGS. 12A to 12E.
  • the light amount distribution in the cross section passing through the central axis C in each case is shown in FIGS. 13A to 13E. Further, from FIGS.
  • FIG. 14A the results of calculating the "distance from the center where the amount of light is 60% of the peak value" and the “distance from the center where the amount of light is 80% of the peak value” are shown in FIG. 14A. Shown together. As shown in FIG. 14A, the “distance from the center where the amount of light is 60% of the peak value” is 58 mm or more, which is the acceptance standard, in each case. Further, as shown in FIG. 14A, the "distance from the center where the amount of light is 80% of the peak value” is also 44 mm or more, which is the acceptance standard, in each case. Further, from the tendency of FIG.
  • the LED pitch when the LED pitch is less than 8.5 mm, it is considered that the "distance from the center where the amount of light is 60% of the peak value" is less than the pass value of 58 mm. Therefore, when the light distribution angle of each light emitting diode 2 is less than 50 °, it can be said that the LED pitch is preferably 8.5 mm or more.
  • the LED pitch when the LED pitch is less than 50 °, it can be said that the LED pitch is preferably 8.5 mm or more.
  • the in-plane light amount distribution ratio of the irradiation surface 3 was used as an evaluation standard.
  • the in-plane light intensity distribution ratio was calculated by the bottom value / peak value using the peak value and the bottom value at the drop in the light intensity immediately before the peak in the light intensity distributions of FIGS. 13A to 13E.
  • the acceptance criterion is that the in-plane light amount distribution ratio is 80% (0.8) or more.
  • the calculation results of the in-plane light amount distribution ratio are summarized in FIG. 14B. As shown in FIG. 14B, when the LED pitch is 20 mm, it can be seen that the in-plane light amount distribution ratio is less than 80%. Therefore, it can be said that it is desirable that the LED pitch is less than 20 mm, more preferably 15 mm or less.
  • the LED pitch is 8.5 mm or more and less than 20 mm, more preferably 8.5 mm or more and 15 mm or less.
  • the light amount distribution on the irradiation surface 3 was obtained by simulation when the light distribution angle of the light emitting diode 2 was 140 ° and the LED pitch was 8.5 mm, 10 mm, 12 mm, 15 mm, and 20 mm. The simulation results are shown in FIGS. 15A to 15E.
  • FIGS. 16A to 16E the light amount distribution in the cross section passing through the central axis C in each case is shown in FIGS. 16A to 16E.
  • FIGS. 16A to 16E the results of calculating the "distance from the center where the amount of light is 60% of the peak value" and the “distance from the center where the amount of light is 80% of the peak value” are shown in FIG. 17A. Shown together. As shown in FIG. 17A, the "distance from the center where the amount of light is 60% of the peak value" is 60 mm or more, which is the acceptance standard, in each case. Further, as shown in FIG.
  • the "distance from the center where the amount of light is 80% of the peak value” is also 44 mm or more, which is the acceptance standard, in each case. Further, from the tendency of FIG. 17A, when the LED pitch is much lower than 8.5 mm, "distance from the center where the amount of light is 60% of the peak value” and “distance from the center where the amount of light is 80% of the peak value” and “distance from the center where the amount of light is 80% of the peak value”. Is considered to be below the passing value. Therefore, when the light distribution angle of each light emitting diode 2 is larger than 80 °, it is desirable that the LED pitch is 8.5 mm or more.
  • the in-plane light intensity distribution ratio was determined in each of the light intensity distributions of FIGS. 16A to 16E.
  • the calculation results of the in-plane light amount distribution ratio are summarized in FIG. 17B.
  • the LED pitch is preferably 20 mm or less. From the above results, when the light distribution angle of each light emitting diode 2 is larger than 80 °, it is desirable that the LED pitch is 8.5 mm or more and 20 mm or less.
  • the LED pitch is constant and the number of light emitting diodes 2 used is changed.
  • the LED pitch is constant at 10 mm, and the light emitting diodes 2 arranged in a circle around the central light emitting diode 2 are arranged in a circle, one round, two rounds, three rounds, and four rounds.
  • the cases of 5, 6, and 7 laps were examined.
  • the number of light emitting diodes 2 used is 7 for 1 lap, 19 for 2 laps, 37 for 3 laps, 61 for 4 laps, 91 for 5 laps, and 127 for 6 laps.
  • the number is 169.
  • the vertical axis is the amount of light standardized by the peak value.
  • the diameter of the light source used in the actual simulation was used for plotting.
  • the horizontal axis was standardized by dividing the distance from the center, which is the horizontal axis of FIG. 19A, by the radius of the light source region (the radius of the region where the light emitting diode 2 is arranged). As shown in FIGS.
  • the radius of the light source region is 10 mm for one lap, 20 mm for two laps, 30 mm for three laps, 40 mm for four laps, 50 mm for five laps, and six laps. In the case of, it is 60 mm, and in the case of 7 laps, it is 70 mm.
  • the simulation result of normalization on the horizontal axis is shown in FIG. 19B. As shown in FIG. 19B, it can be seen that the distance (distance from the center / radius of the light source region) at which the amount of light is 60% of the peak value is almost constant regardless of the number of light emitting diodes used. Similarly, the simulation result when the light distribution angle is 140 ° is shown in FIG.
  • FIG. 20B the graph in which the horizontal axis is standardized is shown in FIG. 20B.
  • the light distribution angle is 140 °
  • the relationship between the standardized light amount and the distance (distance from the center / radius of the light source region) is almost the same. From the above, it was found that when the LED pitch is constant, the number of light emitting diodes 2 used does not contribute to the uniformity of the amount of light on the irradiation surface 3. In other words, the evaluation according to the present embodiment was found to be effective regardless of the number of light emitting diodes 2 used.
  • each light emitting diode is less than 50 °
  • the optical distance D from each light emitting diode 2 to the irradiation surface 3 is 200 mm or less
  • the LED pitch is 8.5 mm or more and less than 20 mm. Is.
  • the light source device 1 is a device in which a plurality of light emitting diodes 2 are arranged on a plane, and the light distribution angle of each light emitting diode 2 is less than 50 ° or 80 °. Greater. This makes it possible to improve the uniformity of the amount of light on the irradiation surface 3.
  • the position of the irradiation surface 3 (optical distance D from the light emitting diode 2 to the irradiation surface 3) is defined, but the light irradiation to the object is performed at the position including the irradiation surface 3. It may be performed, and for example, the object may be irradiated with light in the regions before and after the irradiation surface 3.
  • the running water is also irradiated with ultraviolet light before and after the set irradiation surface 3.
  • Such cases are also included in the present invention.
  • the application of the light source device 1 is not limited to the sterilization application, and can be applied to, for example, a resin curing device that cures an ultraviolet curable resin, lighting that irradiates visible light, and the like.
  • a resin curing device that cures an ultraviolet curable resin, lighting that irradiates visible light, and the like.
  • the pitch of the light emitting diode may be appropriately changed within a range in which the uniformity of the amount of light on the irradiation surface 3 can be maintained.
  • the light emitting diodes 2 do not have to be arranged in a circular shape as a whole, and may be arranged in a rectangular shape as a whole, for example.

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  • Led Device Packages (AREA)

Abstract

Dans un dispositif de source de lumière (1) dans lequel plusieurs diodes électroluminescentes (2) sont disposées sur un plan, l'angle de distribution de lumière de chaque diode électroluminescente (2) est inférieur à 50° ou supérieur à 80°.
PCT/JP2020/016807 2020-04-09 2020-04-09 Dispositif de source de lumière WO2021205671A1 (fr)

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CN202080099566.8A CN115380188A (zh) 2020-04-09 2020-04-09 光源装置
PCT/JP2020/016807 WO2021205671A1 (fr) 2020-04-09 2020-04-09 Dispositif de source de lumière
US17/917,093 US20230151949A1 (en) 2020-04-09 2020-04-09 Light source device
JP2022514301A JPWO2021205671A1 (fr) 2020-04-09 2020-04-09

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017064610A (ja) * 2015-09-29 2017-04-06 日機装株式会社 照射装置および流体殺菌方法
JP2018061618A (ja) * 2016-10-11 2018-04-19 日機装株式会社 殺菌装置
JP2019034297A (ja) * 2017-08-21 2019-03-07 日機装株式会社 流水殺菌装置
JP2019072179A (ja) * 2017-10-16 2019-05-16 日機装株式会社 流体殺菌装置および流体殺菌装置の制御方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6454437B1 (en) * 1999-07-28 2002-09-24 William Kelly Ring lighting
US6641284B2 (en) * 2002-02-21 2003-11-04 Whelen Engineering Company, Inc. LED light assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017064610A (ja) * 2015-09-29 2017-04-06 日機装株式会社 照射装置および流体殺菌方法
JP2018061618A (ja) * 2016-10-11 2018-04-19 日機装株式会社 殺菌装置
JP2019034297A (ja) * 2017-08-21 2019-03-07 日機装株式会社 流水殺菌装置
JP2019072179A (ja) * 2017-10-16 2019-05-16 日機装株式会社 流体殺菌装置および流体殺菌装置の制御方法

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